Use Go1.11 module (#5743)

* Migrate to go modules

* make vendor

* Update mvdan.cc/xurls

* make vendor

* Update code.gitea.io/git

* make fmt-check

* Update github.com/go-sql-driver/mysql

* make vendor

vendor/github.com/kevinburke/ssh_config/.gitattributes

@@ -0,0 +1 @@
+testdata/dos-lines eol=crlf

vendor/github.com/kevinburke/ssh_config/.gitignore

@@ -0,0 +1 @@
+/bazel-*

vendor/github.com/kevinburke/ssh_config/.travis.yml

@@ -0,0 +1,15 @@
+go_import_path: github.com/kevinburke/ssh_config
+
+language: go
+
+go:
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+  - master
+
+before_script:
+    - go get -u ./...
+
+script:
+    - make race-test

vendor/github.com/kevinburke/ssh_config/Makefile

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+BUMP_VERSION := $(GOPATH)/bin/bump_version
+MEGACHECK := $(GOPATH)/bin/megacheck
+WRITE_MAILMAP := $(GOPATH)/bin/write_mailmap
+
+IGNORES := 'github.com/kevinburke/ssh_config/config.go:U1000 github.com/kevinburke/ssh_config/config.go:S1002 github.com/kevinburke/ssh_config/token.go:U1000'
+
+$(MEGACHECK):
+	go get honnef.co/go/tools/cmd/megacheck
+
+lint: $(MEGACHECK)
+	go vet ./...
+	$(MEGACHECK) --ignore=$(IGNORES) ./...
+
+test: lint
+	@# the timeout helps guard against infinite recursion
+	go test -timeout=250ms ./...
+
+race-test: lint
+	go test -timeout=500ms -race ./...
+
+$(BUMP_VERSION):
+	go get -u github.com/kevinburke/bump_version
+
+release: test | $(BUMP_VERSION)
+	$(BUMP_VERSION) minor config.go
+
+force: ;
+
+AUTHORS.txt: force | $(WRITE_MAILMAP)
+	$(WRITE_MAILMAP) > AUTHORS.txt
+
+authors: AUTHORS.txt

vendor/github.com/kevinburke/ssh_config/README.md

@@ -0,0 +1,81 @@
+# ssh_config
+
+This is a Go parser for `ssh_config` files. Importantly, this parser attempts
+to preserve comments in a given file, so you can manipulate a `ssh_config` file
+from a program, if your heart desires.
+
+It's designed to be used with the excellent
+[x/crypto/ssh](https://golang.org/x/crypto/ssh) package, which handles SSH
+negotiation but isn't very easy to configure.
+
+The `ssh_config` `Get()` and `GetStrict()` functions will attempt to read values
+from `$HOME/.ssh/config` and fall back to `/etc/ssh/ssh_config`. The first
+argument is the host name to match on, and the second argument is the key you
+want to retrieve.
+
+```go
+port := ssh_config.Get("myhost", "Port")
+```
+
+You can also load a config file and read values from it.
+
+```go
+var config = `
+Host *.test
+  Compression yes
+`
+
+cfg, err := ssh_config.Decode(strings.NewReader(config))
+fmt.Println(cfg.Get("example.test", "Port"))
+```
+
+Some SSH arguments have default values - for example, the default value for
+`KeyboardAuthentication` is `"yes"`. If you call Get(), and no value for the
+given Host/keyword pair exists in the config, we'll return a default for the
+keyword if one exists.
+
+### Manipulating SSH config files
+
+Here's how you can manipulate an SSH config file, and then write it back to
+disk.
+
+```go
+f, _ := os.Open(filepath.Join(os.Getenv("HOME"), ".ssh", "config"))
+cfg, _ := ssh_config.Decode(f)
+for _, host := range cfg.Hosts {
+    fmt.Println("patterns:", host.Patterns)
+    for _, node := range host.Nodes {
+        // Manipulate the nodes as you see fit, or use a type switch to
+        // distinguish between Empty, KV, and Include nodes.
+        fmt.Println(node.String())
+    }
+}
+
+// Print the config to stdout:
+fmt.Println(cfg.String())
+```
+
+## Spec compliance
+
+Wherever possible we try to implement the specification as documented in
+the `ssh_config` manpage. Unimplemented features should be present in the
+[issues][issues] list.
+
+Notably, the `Match` directive is currently unsupported.
+
+[issues]: https://github.com/kevinburke/ssh_config/issues
+
+## Errata
+
+This is the second [comment-preserving configuration parser][blog] I've written, after
+[an /etc/hosts parser][hostsfile]. Eventually, I will write one for every Linux
+file format.
+
+[blog]: https://kev.inburke.com/kevin/more-comment-preserving-configuration-parsers/
+[hostsfile]: https://github.com/kevinburke/hostsfile
+
+## Donating
+
+Donations free up time to make improvements to the library, and respond to
+bug reports. You can send donations via Paypal's "Send Money" feature to
+kev@inburke.com. Donations are not tax deductible in the USA.